Unknown User message in sendmail maillog.

[Aaron Cronkright <aaron@cronkright.com>]

Hello all,

I am getting a lot of these "unknown user" messages in my maillog file each 
day.  It is obvious that it is some marketing geek who knows about 2mm about 
computers trying to probe for valid email addresses.

My problem is that I can't seem to find the log entry that gives me the ip addr 
and/or hostname of the computer doing this.  Anyone have a finger to point me 
in the proper direction so I can block this bozo at the firewall?

--Begin Log--

--------------------- sendmail Begin ------------------------ 

280703 bytes transferred 
37 messages sent 

Unknown users: 
    mauricio@cronkright.com: 1 Times(s) 
    snoopy@cronkright.com: 1 Times(s) 
    alp@cronkright.com: 1 Times(s) 
    boots@cronkright.com: 1 Times(s) 
    kylie@cronkright.com: 1 Times(s) 
    jwebb@cronkright.com: 1 Times(s) 
    blanche@cronkright.com: 1 Times(s) 
    lake@cronkright.com: 1 Times(s) 
    arrow@cronkright.com: 1 Times(s) 
    jcarroll@cronkright.com: 1 Times(s) 
    mcclure@cronkright.com: 1 Times(s) 
    bross@cronkright.com: 1 Times(s) 
    sweet@cronkright.com: 1 Times(s) 
    mps@cronkright.com: 1 Times(s) 
    jona@cronkright.com: 1 Times(s) 
    barnett@cronkright.com: 1 Times(s) 
    mes@cronkright.com: 1 Times(s) 
    su@cronkright.com: 1 Times(s) 
    liana@cronkright.com: 1 Times(s) 
    mjr@cronkright.com: 1 Times(s) 
    jrw@cronkright.com: 1 Times(s) 
    masami@cronkright.com: 1 Times(s) 
    aplus@cronkright.com: 1 Times(s) 
    kieran@cronkright.com: 1 Times(s) 
    jcohen@cronkright.com: 1 Times(s) 
    michaelj@cronkright.com: 1 Times(s) 
    slater@cronkright.com: 1 Times(s) 
    bmorris@cronkright.com: 1 Times(s) 
    676O4014E27137150a@cronkright.com: 1 Times(s) 
    animal@cronkright.com: 1 Times(s) 
    sthomas@cronkright.com: 1 Times(s) 
    alb@cronkright.com: 1 Times(s) 
    honor@cronkright.com: 1 Times(s) 
    andrewm@cronkright.com: 1 Times(s) 
    kiki@cronkright.com: 1 Times(s) 
    jma@cronkright.com: 1 Times(s) 
    abacus@cronkright.com: 1 Times(s) 
    book@cronkright.com: 1 Times(s) 
    magoo@cronkright.com: 1 Times(s) 
    sdc@cronkright.com: 1 Times(s) 
    bertha@cronkright.com: 1 Times(s) 
    alanc@cronkright.com: 1 Times(s) 
    jons@cronkright.com: 1 Times(s) 
    mathieu@cronkright.com: 1 Times(s) 
    bmc@cronkright.com: 1 Times(s) 
    mroberts@cronkright.com: 1 Times(s) 
    jackt@cronkright.com: 1 Times(s) 
    mjl@cronkright.com: 1 Times(s) 
    mjp@cronkright.com: 1 Times(s) 
    jamess@cronkright.com: 1 Times(s) 
    3a6aK24303J72054c0e@cronkright.com: 1 Times(s) 
    ilene@cronkright.com: 1 Times(s) 
    steveo@cronkright.com: 1 Times(s) 
    staylor@cronkright.com: 1 Times(s) 
    kwhite@cronkright.com: 1 Times(s) 
    mega@cronkright.com: 1 Times(s) 


--End Log--

Thanks,
Aaron Cronkright
aaron@cronkright.com




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